<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>

       h1{
           color: antiquewhite;
       }
    </style>
    <link rel="stylesheet" href="my.css">
</head>
<body>
<h1 >内联样式1</h1>
<h1 >内联样式2</h1>
<h2>外部样式1</h2>
<h2>外部样式2</h2>

</body>
</html>